I'm a cat person.
My mom + brother have 2 cats, my dad has 1 cat (I have none since I moved). Cats rock.
Then again, the one experience I remember with a dog was this little whimpy dog my dad had who had issues controlling his functions. I was in middle school, my brother was in elementary school, my parents worked. I was always the first one home, and therefore responsible for cleaning up his mess almost every day. It was my dad's dog but he didn't feel like putting him outside or putting him in a cage (and he was always the last one home so any mess the dog made would have been cleaned up by then anyway).
The cats have always been fine though, besides the scratching but their front paws were declawed, so it's not a huge issue anymore.